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diff --git a/lib/ose/doc/src/ose_intro.xml b/lib/ose/doc/src/ose_intro.xml new file mode 100644 index 0000000000..0dd3ec409e --- /dev/null +++ b/lib/ose/doc/src/ose_intro.xml @@ -0,0 +1,153 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE chapter SYSTEM "chapter.dtd"> + +<chapter> + <header> + <copyright> + <year>2013</year><year>2014</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + The contents of this file are subject to the Erlang Public License, + Version 1.1, (the "License"); you may not use this file except in + compliance with the License. You should have received a copy of the + Erlang Public License along with this software. If not, it can be + retrieved online at http://www.erlang.org/. + + Software distributed under the License is distributed on an "AS IS" + basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + the License for the specific language governing rights and limitations + under the License. + + </legalnotice> + + <title>Introduction</title> + <prepared>Lukas Larsson</prepared> + <docno></docno> + <date>2014-01-08</date> + <rev>A</rev> + <file>ose_intro.xml</file> + </header> + + <section> + <title>Features</title> + </section> + + <section> + <title>Starting Erlang/OTP</title> + <p> + Starting Erlang/OTP on OSE is not as simple as on Unix/Windows (yet). + First of all you have to explicitly use the beam (or beam.smp) executables + found in erts-X.Y.Z/bin as the load module that you run. This in turn + means that you have to supply the raw beam arguments to the emulator + when starting. Fortunately <c>erl</c> on Unix/Windows has a + undocumented flag called <c>-emu_args_exit</c> that can be used to + figure out what the arguments to beam look like. For example:</p> + <code># erl +Mut false +A 10 +S 4:4 +Muycs256 +P 2096 +Q 2096 -emu_args_exit +-Mut +false +-A +10 +-S +4:4 +-Muycs256 +-P +2096 +-Q +2096 +-- +-root +/usr/local/lib/erlang +-progname +erl +-- +-home +/home/erlang +--</code> + <p> + The arguments are printed on seperate lines to make it possible to know + what has to be quoted with ". Each line is one quotable unit. + So taking the arguments above you can supply them to pm_create or + just execute directly on the command line. For example:</p> + <code>rtose@acp3400> pm_install erlang /mst/erlang/erts-6.0/bin/beam.smp +rtose@acp3400> pm_create -c ARGV="-Mut false -A 10 -S 4:4 -Muycs256 -P 2096 -Q 2099 -- -root /mst/erlang -progname erl -- -home /mst/erlang --" erlang +pid: 0x110059 +rtose@acp3400> pm_start 0x110059</code> + <p> + Also note that since we are running erl to figure out the arguments on a + seperate machine the paths have to be updated. In the example above + <c>/usr/local/lib/erlang</c> was replaced by <c>/mst/erlang/</c>. The + goal is to in future releases not have to do the special argument handling + but for now (17.0-rc2) you have to do it. + </p> + <note> + Because of a limitation in the way the OSE handles stdio when starting + load modules using pm_install/create the Erlang shell only reads every + other command from stdin. However if you start Erlang using run_erl + you do not have this problem. So it is highly recommended that you + start Erlang using run_erl. + </note> + </section> + + <section> + <title>run_erl and to_erl</title> + <p> + In OSE run_erl and to_erl are combined into a single load module called + run_erl_lm. Installing and starting the load module will add two new + shell commands called run_erl and to_erl. They work in exactly the same + way as the unix variants of run_erl and to_erl, except that the read + and write pipes have to be placed under the /pipe vm. One additional + option also exists to run_erl on ose: + <taglist> + <tag><c>-block Name</c></tag> + <item>The name of the install handle and block that will be created/used by + installing and exectuting the first part of the command. If nothing + if given the basename of the load module will be used for this value. + Example: + <code>pm_install erlang /path/to/erlang/vm/beam.smp +run_erl -daemon -block erlang /pipe/ /mst/erlang_logs/ "beam.smp -A 1 -- -root /mst/erlang -- -home /mst --"</code> + </item> + </taglist> + The same argument munching as when starting Erlang/OTP without run_erl + has to be done. If <c>-daemon</c> is given then all error printouts + are sent to the ramlog. + See also + <seealso marker="erts:run_erl">run_erl</seealso> for more details. + </p> + <p> + Below is an example of how to get started with <c>run_erl_lm</c>. + <code>rtose@acp3400> pm_install run_erl_lm /mst/erlang/erts-6.0/bin/run_erl_lm +rtose@acp3400> pm_create run_erl_lm +pid: 0x1c005d +rtose@acp3400> pm_start 0x1c005d +rtose@acp3400> mkdir /mst/erlang_log +rtose@acp3400> run_erl -daemon /pipe/ /mst/erlang_log/ "/mst/erlang/erts-6.0/bin/beam.smp -A 1 -- -root /mst/erlang -- -home /mst --" +rtose@acp3400> to_erl +Attaching to /pipe/erlang.pipe.1 (^C to exit) +os:type(). +{ose,release} +2> +'to_erl' terminated.</code> + Note that Ctrl-C is used instead of Ctrl-D to exit the to_erl shell. + </p> + </section> + + <section> + <title>epmd</title> + <p> + In OSE epmd will not be started automatically so if you want to use + Erlang distribution you have to manually start epmd. + </p> + </section> + + <section> + <title>VM Process Priorities</title> + <p> + It is possible to set the priorities you want for the OSE processes that + thr emulator creates in the lmconf. An example of how to do it can be + found in the default lmconf file in + $ERL_TOP/erts/emulator/sys/ose/default.lmconf. + </p> + </section> + +</chapter> |